The reporting person made an irrevocable election in November 2010 to satisfy tax withholding obligations relating to the vesting of shares of Common Stock previously awarded, through the deduction of shares from the vested amount.

(
2)

Held in the issuer's 401(k) plan as of 2/15/11.

(
3)

Held in the issuer's employee stock purchase plan (ESPP) as of 2/4/11, and includes 50.02 shares acquired under the ESPP since the date of the reporting person's last ownership report.